This article describes the burgeoning Swiss technology for small aircraft called FLARM. This technology, which is essentially a GPS-based flying alarm system, was developed in response to the inadequacy of the Visual Flight Rules (VFR) that these aircraft typically rely on. As an example of the need for new technologies in this field, each year there are nearly twenty mid-air collisions involving these aircraft half of which are fatal. Over 2,500 FLARM devices are already in use in Germany, France, Switzerland, Austria, New Zealand, and South Africa. FLARM technology works by using a Wide Area Augmentation System (WAAS) enhanced GPS along with an internal barometric sensor. The unit's computer uses internal algorithms to predict the craft's flight path, then transmits that information over low-power, short-range radio once per second to be interrogated by other aircraft.

  • Availability:
  • Supplemental Notes:
    • Page range: pp 22, 24
  • Corporate Authors:

    Advanstar Communications, Incorporated

    131 West First Street
    Duluth, MN  United States  55802-2065
  • Authors:
    • Cameron, A
  • Publication Date: 2005-8


  • English

Media Info

  • Features: Figures; Photos;
  • Pagination: 2p
  • Serial:
    • GPS World
    • Volume: 16
    • Issue Number: 8
    • Publisher: Advanstar Communications, Incorporated
    • ISSN: 1048-5104

Subject/Index Terms

Filing Info

  • Accession Number: 01005518
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Oct 19 2005 1:57PM